@Book{ada,
 author =       {Sahni, Sartaj},
 title =        {Data Structures, Algorithms, and Applications in Java},
 publisher =    {Silicon Press},
 year =         {2009},
 edition =      {second},
 isbn =         {0-929306-33-3}
}

@Book{mat2b,
 author =       {Carstensen, Jens, Frandsen, Jesper and Systime \textsuperscript{a}/s},
 title =        {Mat 2B},
 publisher =    {Systime \textsuperscript{a}/s}},
 year =         {2000},
 edition =      {first, forth printing},
 isbn =         {87-7783-937-4}
}

@misc{pid,
  title =         {\url{http://www.inpharmix.com/jps/PID_Controller_For_Lego_Mindstorms_Robots.html}}
}
